Step 2) Head to the Dashboard, and on the left-hand sidebar, choose Wordfence and then Cell Phone Sign-in from the dropdown menu.

Step 3) You have to be a Premium Member to use the Cellphone Sign-in ($39 a year), and in doing so, you will get a new API key which you will have to copy and paste into the Options page. With Cellphone Sign-in enabled for users, a hacker would have to steal that persons mobile phone in order to gain access to the site, something that is highly unlikely for 99.9% of sites. A two-step verification process enables cellphone users to sign-in via their mobiles using a code that is sent via SMS that only they will receive.

Step 4) To enable cellphone sign-in authentication, follow the simple process as featured below and enable your phone for site access.